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Diffstat (limited to 'xorg-server/hw/xfree86/modes/xf86Modes.c')
-rw-r--r--xorg-server/hw/xfree86/modes/xf86Modes.c1501
1 files changed, 771 insertions, 730 deletions
diff --git a/xorg-server/hw/xfree86/modes/xf86Modes.c b/xorg-server/hw/xfree86/modes/xf86Modes.c
index 45308f484..dcd3a2805 100644
--- a/xorg-server/hw/xfree86/modes/xf86Modes.c
+++ b/xorg-server/hw/xfree86/modes/xf86Modes.c
@@ -1,730 +1,771 @@
-/*
- * Copyright (c) 1997-2003 by The XFree86 Project, Inc.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
- * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
- * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
- * OTHER DEALINGS IN THE SOFTWARE.
- *
- * Except as contained in this notice, the name of the copyright holder(s)
- * and author(s) shall not be used in advertising or otherwise to promote
- * the sale, use or other dealings in this Software without prior written
- * authorization from the copyright holder(s) and author(s).
- */
-
-#ifdef HAVE_XORG_CONFIG_H
-#include <xorg-config.h>
-#else
-#ifdef HAVE_CONFIG_H
-#include <config.h>
-#endif
-#endif
-
-#include "xf86Modes.h"
-#include "xf86Priv.h"
-
-extern XF86ConfigPtr xf86configptr;
-
-/**
- * Calculates the horizontal sync rate of a mode.
- */
-double
-xf86ModeHSync(const DisplayModeRec *mode)
-{
- double hsync = 0.0;
-
- if (mode->HSync > 0.0)
- hsync = mode->HSync;
- else if (mode->HTotal > 0)
- hsync = (float)mode->Clock / (float)mode->HTotal;
-
- return hsync;
-}
-
-/**
- * Calculates the vertical refresh rate of a mode.
- */
-double
-xf86ModeVRefresh(const DisplayModeRec *mode)
-{
- double refresh = 0.0;
-
- if (mode->VRefresh > 0.0)
- refresh = mode->VRefresh;
- else if (mode->HTotal > 0 && mode->VTotal > 0) {
- refresh = mode->Clock * 1000.0 / mode->HTotal / mode->VTotal;
- if (mode->Flags & V_INTERLACE)
- refresh *= 2.0;
- if (mode->Flags & V_DBLSCAN)
- refresh /= 2.0;
- if (mode->VScan > 1)
- refresh /= (float)(mode->VScan);
- }
- return refresh;
-}
-
-int
-xf86ModeWidth (const DisplayModeRec *mode, Rotation rotation)
-{
- switch (rotation & 0xf) {
- case RR_Rotate_0:
- case RR_Rotate_180:
- return mode->HDisplay;
- case RR_Rotate_90:
- case RR_Rotate_270:
- return mode->VDisplay;
- default:
- return 0;
- }
-}
-
-int
-xf86ModeHeight (const DisplayModeRec *mode, Rotation rotation)
-{
- switch (rotation & 0xf) {
- case RR_Rotate_0:
- case RR_Rotate_180:
- return mode->VDisplay;
- case RR_Rotate_90:
- case RR_Rotate_270:
- return mode->HDisplay;
- default:
- return 0;
- }
-}
-
-/** Calculates the memory bandwidth (in MiB/sec) of a mode. */
-unsigned int
-xf86ModeBandwidth(DisplayModePtr mode, int depth)
-{
- float a_active, a_total, active_percent, pixels_per_second;
- int bytes_per_pixel = bits_to_bytes(depth);
-
- if (!mode->HTotal || !mode->VTotal || !mode->Clock)
- return 0;
-
- a_active = mode->HDisplay * mode->VDisplay;
- a_total = mode->HTotal * mode->VTotal;
- active_percent = a_active / a_total;
- pixels_per_second = active_percent * mode->Clock * 1000.0;
-
- return (unsigned int)(pixels_per_second * bytes_per_pixel / (1024 * 1024));
-}
-
-/** Sets a default mode name of <width>x<height> on a mode. */
-void
-xf86SetModeDefaultName(DisplayModePtr mode)
-{
- Bool interlaced = !!(mode->Flags & V_INTERLACE);
-
- free(mode->name);
-
- XNFasprintf(&mode->name, "%dx%d%s", mode->HDisplay, mode->VDisplay,
- interlaced ? "i" : "");
-}
-
-/*
- * xf86SetModeCrtc
- *
- * Initialises the Crtc parameters for a mode. The initialisation includes
- * adjustments for interlaced and double scan modes.
- */
-void
-xf86SetModeCrtc(DisplayModePtr p, int adjustFlags)
-{
- if ((p == NULL) || ((p->type & M_T_CRTC_C) == M_T_BUILTIN))
- return;
-
- p->CrtcHDisplay = p->HDisplay;
- p->CrtcHSyncStart = p->HSyncStart;
- p->CrtcHSyncEnd = p->HSyncEnd;
- p->CrtcHTotal = p->HTotal;
- p->CrtcHSkew = p->HSkew;
- p->CrtcVDisplay = p->VDisplay;
- p->CrtcVSyncStart = p->VSyncStart;
- p->CrtcVSyncEnd = p->VSyncEnd;
- p->CrtcVTotal = p->VTotal;
- if (p->Flags & V_INTERLACE) {
- if (adjustFlags & INTERLACE_HALVE_V) {
- p->CrtcVDisplay /= 2;
- p->CrtcVSyncStart /= 2;
- p->CrtcVSyncEnd /= 2;
- p->CrtcVTotal /= 2;
- }
- /* Force interlaced modes to have an odd VTotal */
- /* maybe we should only do this when INTERLACE_HALVE_V is set? */
- p->CrtcVTotal |= 1;
- }
-
- if (p->Flags & V_DBLSCAN) {
- p->CrtcVDisplay *= 2;
- p->CrtcVSyncStart *= 2;
- p->CrtcVSyncEnd *= 2;
- p->CrtcVTotal *= 2;
- }
- if (p->VScan > 1) {
- p->CrtcVDisplay *= p->VScan;
- p->CrtcVSyncStart *= p->VScan;
- p->CrtcVSyncEnd *= p->VScan;
- p->CrtcVTotal *= p->VScan;
- }
- p->CrtcVBlankStart = min(p->CrtcVSyncStart, p->CrtcVDisplay);
- p->CrtcVBlankEnd = max(p->CrtcVSyncEnd, p->CrtcVTotal);
- p->CrtcHBlankStart = min(p->CrtcHSyncStart, p->CrtcHDisplay);
- p->CrtcHBlankEnd = max(p->CrtcHSyncEnd, p->CrtcHTotal);
-
- p->CrtcHAdjusted = FALSE;
- p->CrtcVAdjusted = FALSE;
-}
-
-/**
- * Allocates and returns a copy of pMode, including pointers within pMode.
- */
-DisplayModePtr
-xf86DuplicateMode(const DisplayModeRec *pMode)
-{
- DisplayModePtr pNew;
-
- pNew = xnfalloc(sizeof(DisplayModeRec));
- *pNew = *pMode;
- pNew->next = NULL;
- pNew->prev = NULL;
-
- if (pMode->name == NULL)
- xf86SetModeDefaultName(pNew);
- else
- pNew->name = xnfstrdup(pMode->name);
-
- return pNew;
-}
-
-/**
- * Duplicates every mode in the given list and returns a pointer to the first
- * mode.
- *
- * \param modeList doubly-linked mode list
- */
-DisplayModePtr
-xf86DuplicateModes(ScrnInfoPtr pScrn, DisplayModePtr modeList)
-{
- DisplayModePtr first = NULL, last = NULL;
- DisplayModePtr mode;
-
- for (mode = modeList; mode != NULL; mode = mode->next) {
- DisplayModePtr new;
-
- new = xf86DuplicateMode(mode);
-
- /* Insert pNew into modeList */
- if (last) {
- last->next = new;
- new->prev = last;
- } else {
- first = new;
- new->prev = NULL;
- }
- new->next = NULL;
- last = new;
- }
-
- return first;
-}
-
-/**
- * Returns true if the given modes should program to the same timings.
- *
- * This doesn't use Crtc values, as it might be used on ModeRecs without the
- * Crtc values set. So, it's assumed that the other numbers are enough.
- */
-Bool
-xf86ModesEqual(const DisplayModeRec *pMode1, const DisplayModeRec *pMode2)
-{
- if (pMode1->Clock == pMode2->Clock &&
- pMode1->HDisplay == pMode2->HDisplay &&
- pMode1->HSyncStart == pMode2->HSyncStart &&
- pMode1->HSyncEnd == pMode2->HSyncEnd &&
- pMode1->HTotal == pMode2->HTotal &&
- pMode1->HSkew == pMode2->HSkew &&
- pMode1->VDisplay == pMode2->VDisplay &&
- pMode1->VSyncStart == pMode2->VSyncStart &&
- pMode1->VSyncEnd == pMode2->VSyncEnd &&
- pMode1->VTotal == pMode2->VTotal &&
- pMode1->VScan == pMode2->VScan &&
- pMode1->Flags == pMode2->Flags)
- {
- return TRUE;
- } else {
- return FALSE;
- }
-}
-
-static void
-add(char **p, char *new)
-{
- *p = xnfrealloc(*p, strlen(*p) + strlen(new) + 2);
- strcat(*p, " ");
- strcat(*p, new);
-}
-
-/**
- * Print out a modeline.
- */
-void
-xf86PrintModeline(int scrnIndex,DisplayModePtr mode)
-{
- char tmp[256];
- char *flags = xnfcalloc(1, 1);
-
- if (mode->HSkew) {
- snprintf(tmp, 256, "hskew %i", mode->HSkew);
- add(&flags, tmp);
- }
- if (mode->VScan) {
- snprintf(tmp, 256, "vscan %i", mode->VScan);
- add(&flags, tmp);
- }
- if (mode->Flags & V_INTERLACE) add(&flags, "interlace");
- if (mode->Flags & V_CSYNC) add(&flags, "composite");
- if (mode->Flags & V_DBLSCAN) add(&flags, "doublescan");
- if (mode->Flags & V_BCAST) add(&flags, "bcast");
- if (mode->Flags & V_PHSYNC) add(&flags, "+hsync");
- if (mode->Flags & V_NHSYNC) add(&flags, "-hsync");
- if (mode->Flags & V_PVSYNC) add(&flags, "+vsync");
- if (mode->Flags & V_NVSYNC) add(&flags, "-vsync");
- if (mode->Flags & V_PCSYNC) add(&flags, "+csync");
- if (mode->Flags & V_NCSYNC) add(&flags, "-csync");
-#if 0
- if (mode->Flags & V_CLKDIV2) add(&flags, "vclk/2");
-#endif
- xf86DrvMsg(scrnIndex, X_INFO,
- "Modeline \"%s\"x%.01f %6.2f %i %i %i %i %i %i %i %i%s "
- "(%.01f kHz)\n",
- mode->name, mode->VRefresh, mode->Clock/1000., mode->HDisplay,
- mode->HSyncStart, mode->HSyncEnd, mode->HTotal,
- mode->VDisplay, mode->VSyncStart, mode->VSyncEnd,
- mode->VTotal, flags, xf86ModeHSync(mode));
- free(flags);
-}
-
-/**
- * Marks as bad any modes with unsupported flags.
- *
- * \param modeList doubly-linked list of modes.
- * \param flags flags supported by the driver.
- *
- * \bug only V_INTERLACE and V_DBLSCAN are supported. Is that enough?
- */
-void
-xf86ValidateModesFlags(ScrnInfoPtr pScrn, DisplayModePtr modeList,
- int flags)
-{
- DisplayModePtr mode;
-
- if (flags == (V_INTERLACE | V_DBLSCAN))
- return;
-
- for (mode = modeList; mode != NULL; mode = mode->next) {
- if (mode->Flags & V_INTERLACE && !(flags & V_INTERLACE))
- mode->status = MODE_NO_INTERLACE;
- if (mode->Flags & V_DBLSCAN && !(flags & V_DBLSCAN))
- mode->status = MODE_NO_DBLESCAN;
- }
-}
-
-/**
- * Marks as bad any modes extending beyond the given max X, Y, or pitch.
- *
- * \param modeList doubly-linked list of modes.
- */
-void
-xf86ValidateModesSize(ScrnInfoPtr pScrn, DisplayModePtr modeList,
- int maxX, int maxY, int maxPitch)
-{
- DisplayModePtr mode;
-
- if (maxPitch <= 0)
- maxPitch = MAXINT;
- if (maxX <= 0)
- maxX = MAXINT;
- if (maxY <= 0)
- maxY = MAXINT;
-
- for (mode = modeList; mode != NULL; mode = mode->next) {
- if ((xf86ModeWidth(mode, RR_Rotate_0) > maxPitch ||
- xf86ModeWidth(mode, RR_Rotate_0) > maxX ||
- xf86ModeHeight(mode, RR_Rotate_0) > maxY) &&
- (xf86ModeWidth(mode, RR_Rotate_90) > maxPitch ||
- xf86ModeWidth(mode, RR_Rotate_90) > maxX ||
- xf86ModeHeight(mode, RR_Rotate_90) > maxY)) {
- if (xf86ModeWidth(mode, RR_Rotate_0) > maxPitch ||
- xf86ModeWidth(mode, RR_Rotate_90) > maxPitch)
- mode->status = MODE_BAD_WIDTH;
-
- if (xf86ModeWidth(mode, RR_Rotate_0) > maxX ||
- xf86ModeWidth(mode, RR_Rotate_90) > maxX)
- mode->status = MODE_VIRTUAL_X;
-
- if (xf86ModeHeight(mode, RR_Rotate_0) > maxY ||
- xf86ModeHeight(mode, RR_Rotate_90) > maxY)
- mode->status = MODE_VIRTUAL_Y;
- }
-
- if (mode->next == modeList)
- break;
- }
-}
-
-/**
- * Marks as bad any modes that aren't supported by the given monitor's
- * hsync and vrefresh ranges.
- *
- * \param modeList doubly-linked list of modes.
- */
-void
-xf86ValidateModesSync(ScrnInfoPtr pScrn, DisplayModePtr modeList,
- MonPtr mon)
-{
- DisplayModePtr mode;
-
- for (mode = modeList; mode != NULL; mode = mode->next) {
- Bool bad;
- int i;
-
- bad = TRUE;
- for (i = 0; i < mon->nHsync; i++) {
- if (xf86ModeHSync(mode) >= mon->hsync[i].lo * (1-SYNC_TOLERANCE) &&
- xf86ModeHSync(mode) <= mon->hsync[i].hi * (1+SYNC_TOLERANCE))
- {
- bad = FALSE;
- }
- }
- if (bad)
- mode->status = MODE_HSYNC;
-
- bad = TRUE;
- for (i = 0; i < mon->nVrefresh; i++) {
- if (xf86ModeVRefresh(mode) >= mon->vrefresh[i].lo * (1-SYNC_TOLERANCE) &&
- xf86ModeVRefresh(mode) <= mon->vrefresh[i].hi * (1+SYNC_TOLERANCE))
- {
- bad = FALSE;
- }
- }
- if (bad)
- mode->status = MODE_VSYNC;
-
- if (mode->next == modeList)
- break;
- }
-}
-
-/**
- * Marks as bad any modes extending beyond outside of the given clock ranges.
- *
- * \param modeList doubly-linked list of modes.
- * \param min pointer to minimums of clock ranges
- * \param max pointer to maximums of clock ranges
- * \param n_ranges number of ranges.
- */
-void
-xf86ValidateModesClocks(ScrnInfoPtr pScrn, DisplayModePtr modeList,
- int *min, int *max, int n_ranges)
-{
- DisplayModePtr mode;
- int i;
-
- for (mode = modeList; mode != NULL; mode = mode->next) {
- Bool good = FALSE;
- for (i = 0; i < n_ranges; i++) {
- if (mode->Clock >= min[i] * (1-SYNC_TOLERANCE) &&
- mode->Clock <= max[i] * (1+SYNC_TOLERANCE)) {
- good = TRUE;
- break;
- }
- }
- if (!good)
- mode->status = MODE_CLOCK_RANGE;
- }
-}
-
-/**
- * If the user has specified a set of mode names to use, mark as bad any modes
- * not listed.
- *
- * The user mode names specified are prefixes to names of modes, so "1024x768"
- * will match modes named "1024x768", "1024x768x75", "1024x768-good", but
- * "1024x768x75" would only match "1024x768x75" from that list.
- *
- * MODE_BAD is used as the rejection flag, for lack of a better flag.
- *
- * \param modeList doubly-linked list of modes.
- */
-void
-xf86ValidateModesUserConfig(ScrnInfoPtr pScrn, DisplayModePtr modeList)
-{
- DisplayModePtr mode;
-
- if (pScrn->display->modes[0] == NULL)
- return;
-
- for (mode = modeList; mode != NULL; mode = mode->next) {
- int i;
- Bool good = FALSE;
-
- for (i = 0; pScrn->display->modes[i] != NULL; i++) {
- if (strncmp(pScrn->display->modes[i], mode->name,
- strlen(pScrn->display->modes[i])) == 0) {
- good = TRUE;
- break;
- }
- }
- if (!good)
- mode->status = MODE_BAD;
- }
-}
-
-
-/**
- * Marks as bad any modes exceeding the given bandwidth.
- *
- * \param modeList doubly-linked list of modes.
- * \param bandwidth bandwidth in MHz.
- * \param depth color depth.
- */
-void
-xf86ValidateModesBandwidth(ScrnInfoPtr pScrn, DisplayModePtr modeList,
- unsigned int bandwidth, int depth)
-{
- DisplayModePtr mode;
-
- for (mode = modeList; mode != NULL; mode = mode->next) {
- if (xf86ModeBandwidth(mode, depth) > bandwidth)
- mode->status = MODE_BANDWIDTH;
- }
-}
-
-Bool
-xf86ModeIsReduced(const DisplayModeRec *mode)
-{
- if ((((mode->HDisplay * 5 / 4) & ~0x07) > mode->HTotal) &&
- ((mode->HTotal - mode->HDisplay) == 160) &&
- ((mode->HSyncEnd - mode->HDisplay) == 80) &&
- ((mode->HSyncEnd - mode->HSyncStart) == 32) &&
- ((mode->VSyncStart - mode->VDisplay) == 3))
- return TRUE;
- return FALSE;
-}
-
-/**
- * Marks as bad any reduced-blanking modes.
- *
- * \param modeList doubly-linked list of modes.
- */
-void
-xf86ValidateModesReducedBlanking(ScrnInfoPtr pScrn, DisplayModePtr modeList)
-{
- for (; modeList != NULL; modeList = modeList->next)
- if (xf86ModeIsReduced(modeList))
- modeList->status = MODE_NO_REDUCED;
-}
-
-/**
- * Frees any modes from the list with a status other than MODE_OK.
- *
- * \param modeList pointer to a doubly-linked or circular list of modes.
- * \param verbose determines whether the reason for mode invalidation is
- * printed.
- */
-void
-xf86PruneInvalidModes(ScrnInfoPtr pScrn, DisplayModePtr *modeList,
- Bool verbose)
-{
- DisplayModePtr mode;
-
- for (mode = *modeList; mode != NULL;) {
- DisplayModePtr next = mode->next, first = *modeList;
-
- if (mode->status != MODE_OK) {
- if (verbose) {
- char *type = "";
- if (mode->type & M_T_BUILTIN)
- type = "built-in ";
- else if (mode->type & M_T_DEFAULT)
- type = "default ";
- xf86DrvMsg(pScrn->scrnIndex, X_INFO,
- "Not using %smode \"%s\" (%s)\n", type, mode->name,
- xf86ModeStatusToString(mode->status));
- }
- xf86DeleteMode(modeList, mode);
- }
-
- if (next == first)
- break;
- mode = next;
- }
-}
-
-/**
- * Adds the new mode into the mode list, and returns the new list
- *
- * \param modes doubly-linked mode list.
- */
-DisplayModePtr
-xf86ModesAdd(DisplayModePtr modes, DisplayModePtr new)
-{
- if (modes == NULL)
- return new;
-
- if (new) {
- DisplayModePtr mode = modes;
-
- while (mode->next)
- mode = mode->next;
-
- mode->next = new;
- new->prev = mode;
- }
-
- return modes;
-}
-
-/**
- * Build a mode list from a list of config file modes
- */
-static DisplayModePtr
-xf86GetConfigModes (XF86ConfModeLinePtr conf_mode)
-{
- DisplayModePtr head = NULL, prev = NULL, mode;
-
- for (; conf_mode; conf_mode = (XF86ConfModeLinePtr) conf_mode->list.next)
- {
- mode = calloc(1, sizeof(DisplayModeRec));
- if (!mode)
- continue;
- mode->name = xstrdup(conf_mode->ml_identifier);
- if (!mode->name)
- {
- free(mode);
- continue;
- }
- mode->type = 0;
- mode->Clock = conf_mode->ml_clock;
- mode->HDisplay = conf_mode->ml_hdisplay;
- mode->HSyncStart = conf_mode->ml_hsyncstart;
- mode->HSyncEnd = conf_mode->ml_hsyncend;
- mode->HTotal = conf_mode->ml_htotal;
- mode->VDisplay = conf_mode->ml_vdisplay;
- mode->VSyncStart = conf_mode->ml_vsyncstart;
- mode->VSyncEnd = conf_mode->ml_vsyncend;
- mode->VTotal = conf_mode->ml_vtotal;
- mode->Flags = conf_mode->ml_flags;
- mode->HSkew = conf_mode->ml_hskew;
- mode->VScan = conf_mode->ml_vscan;
-
- mode->prev = prev;
- mode->next = NULL;
- if (prev)
- prev->next = mode;
- else
- head = mode;
- prev = mode;
- }
- return head;
-}
-
-/**
- * Build a mode list from a monitor configuration
- */
-DisplayModePtr
-xf86GetMonitorModes (ScrnInfoPtr pScrn, XF86ConfMonitorPtr conf_monitor)
-{
- DisplayModePtr modes = NULL;
- XF86ConfModesLinkPtr modes_link;
-
- if (!conf_monitor)
- return NULL;
-
- /*
- * first we collect the mode lines from the UseModes directive
- */
- for (modes_link = conf_monitor->mon_modes_sect_lst;
- modes_link;
- modes_link = modes_link->list.next)
- {
- /* If this modes link hasn't been resolved, go look it up now */
- if (!modes_link->ml_modes)
- modes_link->ml_modes = xf86findModes (modes_link->ml_modes_str,
- xf86configptr->conf_modes_lst);
- if (modes_link->ml_modes)
- modes = xf86ModesAdd (modes,
- xf86GetConfigModes (modes_link->ml_modes->mon_modeline_lst));
- }
-
- return xf86ModesAdd (modes,
- xf86GetConfigModes (conf_monitor->mon_modeline_lst));
-}
-
-/**
- * Build a mode list containing all of the default modes
- */
-DisplayModePtr
-xf86GetDefaultModes (void)
-{
- DisplayModePtr head = NULL, mode;
- int i;
-
- for (i = 0; i < xf86NumDefaultModes; i++)
- {
- const DisplayModeRec *defMode = &xf86DefaultModes[i];
-
- mode = xf86DuplicateMode(defMode);
- head = xf86ModesAdd(head, mode);
- }
- return head;
-}
-
-/*
- * Walk a mode list and prune out duplicates. Will preserve the preferred
- * mode of an otherwise-duplicate pair.
- *
- * Probably best to call this on lists that are all of a single class
- * (driver, default, user, etc.), otherwise, which mode gets deleted is
- * not especially well defined.
- *
- * Returns the new list.
- */
-
-DisplayModePtr
-xf86PruneDuplicateModes(DisplayModePtr modes)
-{
- DisplayModePtr m, n, o;
-
-top:
- for (m = modes; m; m = m->next) {
- for (n = m->next; n; n = o) {
- o = n->next;
- if (xf86ModesEqual(m, n)) {
- if (n->type & M_T_PREFERRED) {
- xf86DeleteMode(&modes, m);
- goto top;
- }
- else
- xf86DeleteMode(&modes, n);
- }
- }
- }
-
- return modes;
-}
+/*
+ * Copyright (c) 1997-2003 by The XFree86 Project, Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Except as contained in this notice, the name of the copyright holder(s)
+ * and author(s) shall not be used in advertising or otherwise to promote
+ * the sale, use or other dealings in this Software without prior written
+ * authorization from the copyright holder(s) and author(s).
+ */
+
+#ifdef HAVE_XORG_CONFIG_H
+#include <xorg-config.h>
+#else
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+#endif
+
+#include "xf86Modes.h"
+#include "xf86Priv.h"
+
+extern XF86ConfigPtr xf86configptr;
+
+/**
+ * Calculates the horizontal sync rate of a mode.
+ */
+double
+xf86ModeHSync(const DisplayModeRec *mode)
+{
+ double hsync = 0.0;
+
+ if (mode->HSync > 0.0)
+ hsync = mode->HSync;
+ else if (mode->HTotal > 0)
+ hsync = (float)mode->Clock / (float)mode->HTotal;
+
+ return hsync;
+}
+
+/**
+ * Calculates the vertical refresh rate of a mode.
+ */
+double
+xf86ModeVRefresh(const DisplayModeRec *mode)
+{
+ double refresh = 0.0;
+
+ if (mode->VRefresh > 0.0)
+ refresh = mode->VRefresh;
+ else if (mode->HTotal > 0 && mode->VTotal > 0) {
+ refresh = mode->Clock * 1000.0 / mode->HTotal / mode->VTotal;
+ if (mode->Flags & V_INTERLACE)
+ refresh *= 2.0;
+ if (mode->Flags & V_DBLSCAN)
+ refresh /= 2.0;
+ if (mode->VScan > 1)
+ refresh /= (float)(mode->VScan);
+ }
+ return refresh;
+}
+
+int
+xf86ModeWidth (const DisplayModeRec *mode, Rotation rotation)
+{
+ switch (rotation & 0xf) {
+ case RR_Rotate_0:
+ case RR_Rotate_180:
+ return mode->HDisplay;
+ case RR_Rotate_90:
+ case RR_Rotate_270:
+ return mode->VDisplay;
+ default:
+ return 0;
+ }
+}
+
+int
+xf86ModeHeight (const DisplayModeRec *mode, Rotation rotation)
+{
+ switch (rotation & 0xf) {
+ case RR_Rotate_0:
+ case RR_Rotate_180:
+ return mode->VDisplay;
+ case RR_Rotate_90:
+ case RR_Rotate_270:
+ return mode->HDisplay;
+ default:
+ return 0;
+ }
+}
+
+/** Calculates the memory bandwidth (in MiB/sec) of a mode. */
+unsigned int
+xf86ModeBandwidth(DisplayModePtr mode, int depth)
+{
+ float a_active, a_total, active_percent, pixels_per_second;
+ int bytes_per_pixel = bits_to_bytes(depth);
+
+ if (!mode->HTotal || !mode->VTotal || !mode->Clock)
+ return 0;
+
+ a_active = mode->HDisplay * mode->VDisplay;
+ a_total = mode->HTotal * mode->VTotal;
+ active_percent = a_active / a_total;
+ pixels_per_second = active_percent * mode->Clock * 1000.0;
+
+ return (unsigned int)(pixels_per_second * bytes_per_pixel / (1024 * 1024));
+}
+
+/** Sets a default mode name of <width>x<height> on a mode. */
+void
+xf86SetModeDefaultName(DisplayModePtr mode)
+{
+ Bool interlaced = !!(mode->Flags & V_INTERLACE);
+
+ free(mode->name);
+
+ XNFasprintf(&mode->name, "%dx%d%s", mode->HDisplay, mode->VDisplay,
+ interlaced ? "i" : "");
+}
+
+/*
+ * xf86SetModeCrtc
+ *
+ * Initialises the Crtc parameters for a mode. The initialisation includes
+ * adjustments for interlaced and double scan modes.
+ */
+void
+xf86SetModeCrtc(DisplayModePtr p, int adjustFlags)
+{
+ if ((p == NULL) || ((p->type & M_T_CRTC_C) == M_T_BUILTIN))
+ return;
+
+ p->CrtcHDisplay = p->HDisplay;
+ p->CrtcHSyncStart = p->HSyncStart;
+ p->CrtcHSyncEnd = p->HSyncEnd;
+ p->CrtcHTotal = p->HTotal;
+ p->CrtcHSkew = p->HSkew;
+ p->CrtcVDisplay = p->VDisplay;
+ p->CrtcVSyncStart = p->VSyncStart;
+ p->CrtcVSyncEnd = p->VSyncEnd;
+ p->CrtcVTotal = p->VTotal;
+ if (p->Flags & V_INTERLACE) {
+ if (adjustFlags & INTERLACE_HALVE_V) {
+ p->CrtcVDisplay /= 2;
+ p->CrtcVSyncStart /= 2;
+ p->CrtcVSyncEnd /= 2;
+ p->CrtcVTotal /= 2;
+ }
+ /* Force interlaced modes to have an odd VTotal */
+ /* maybe we should only do this when INTERLACE_HALVE_V is set? */
+ p->CrtcVTotal |= 1;
+ }
+
+ if (p->Flags & V_DBLSCAN) {
+ p->CrtcVDisplay *= 2;
+ p->CrtcVSyncStart *= 2;
+ p->CrtcVSyncEnd *= 2;
+ p->CrtcVTotal *= 2;
+ }
+ if (p->VScan > 1) {
+ p->CrtcVDisplay *= p->VScan;
+ p->CrtcVSyncStart *= p->VScan;
+ p->CrtcVSyncEnd *= p->VScan;
+ p->CrtcVTotal *= p->VScan;
+ }
+ p->CrtcVBlankStart = min(p->CrtcVSyncStart, p->CrtcVDisplay);
+ p->CrtcVBlankEnd = max(p->CrtcVSyncEnd, p->CrtcVTotal);
+ p->CrtcHBlankStart = min(p->CrtcHSyncStart, p->CrtcHDisplay);
+ p->CrtcHBlankEnd = max(p->CrtcHSyncEnd, p->CrtcHTotal);
+
+ p->CrtcHAdjusted = FALSE;
+ p->CrtcVAdjusted = FALSE;
+}
+
+/**
+ * Allocates and returns a copy of pMode, including pointers within pMode.
+ */
+DisplayModePtr
+xf86DuplicateMode(const DisplayModeRec *pMode)
+{
+ DisplayModePtr pNew;
+
+ pNew = xnfalloc(sizeof(DisplayModeRec));
+ *pNew = *pMode;
+ pNew->next = NULL;
+ pNew->prev = NULL;
+
+ if (pMode->name == NULL)
+ xf86SetModeDefaultName(pNew);
+ else
+ pNew->name = xnfstrdup(pMode->name);
+
+ return pNew;
+}
+
+/**
+ * Duplicates every mode in the given list and returns a pointer to the first
+ * mode.
+ *
+ * \param modeList doubly-linked mode list
+ */
+DisplayModePtr
+xf86DuplicateModes(ScrnInfoPtr pScrn, DisplayModePtr modeList)
+{
+ DisplayModePtr first = NULL, last = NULL;
+ DisplayModePtr mode;
+
+ for (mode = modeList; mode != NULL; mode = mode->next) {
+ DisplayModePtr new;
+
+ new = xf86DuplicateMode(mode);
+
+ /* Insert pNew into modeList */
+ if (last) {
+ last->next = new;
+ new->prev = last;
+ } else {
+ first = new;
+ new->prev = NULL;
+ }
+ new->next = NULL;
+ last = new;
+ }
+
+ return first;
+}
+
+/**
+ * Returns true if the given modes should program to the same timings.
+ *
+ * This doesn't use Crtc values, as it might be used on ModeRecs without the
+ * Crtc values set. So, it's assumed that the other numbers are enough.
+ */
+Bool
+xf86ModesEqual(const DisplayModeRec *pMode1, const DisplayModeRec *pMode2)
+{
+ if (pMode1->Clock == pMode2->Clock &&
+ pMode1->HDisplay == pMode2->HDisplay &&
+ pMode1->HSyncStart == pMode2->HSyncStart &&
+ pMode1->HSyncEnd == pMode2->HSyncEnd &&
+ pMode1->HTotal == pMode2->HTotal &&
+ pMode1->HSkew == pMode2->HSkew &&
+ pMode1->VDisplay == pMode2->VDisplay &&
+ pMode1->VSyncStart == pMode2->VSyncStart &&
+ pMode1->VSyncEnd == pMode2->VSyncEnd &&
+ pMode1->VTotal == pMode2->VTotal &&
+ pMode1->VScan == pMode2->VScan &&
+ pMode1->Flags == pMode2->Flags)
+ {
+ return TRUE;
+ } else {
+ return FALSE;
+ }
+}
+
+static void
+add(char **p, char *new)
+{
+ *p = xnfrealloc(*p, strlen(*p) + strlen(new) + 2);
+ strcat(*p, " ");
+ strcat(*p, new);
+}
+
+/**
+ * Print out a modeline.
+ *
+ * The mode type bits are informational except for the capitalized U
+ * and P bits which give sort order priority. Letter map:
+ *
+ * USERPREF, U, user preferred is set from the xorg.conf Monitor
+ * Option "PreferredMode" or from the Screen Display Modes statement.
+ * This unique modeline is moved to the head of the list after sorting.
+ *
+ * DRIVER, e, is set by the video driver, EDID or flat panel native.
+ *
+ * USERDEF, z, a configured zoom mode Ctrl+Alt+Keypad-{Plus,Minus}.
+ *
+ * DEFAULT, d, a compiled-in default.
+ *
+ * PREFERRED, P, driver preferred is set by the video device driver,
+ * e.g. the EDID detailed timing modeline. This is a true sort
+ * priority and multiple P modes form a sorted sublist at the list
+ * head.
+ *
+ * BUILTIN, b, a hardware fixed CRTC mode.
+ *
+ * See modes/xf86Crtc.c: xf86ProbeOutputModes().
+ */
+void
+xf86PrintModeline(int scrnIndex, DisplayModePtr mode)
+{
+ char tmp[256];
+ char *flags = xnfcalloc(1, 1);
+#define TBITS 6
+ const char tchar[TBITS+1] = "UezdPb";
+ int tbit[TBITS] = {
+ M_T_USERPREF, M_T_DRIVER, M_T_USERDEF,
+ M_T_DEFAULT, M_T_PREFERRED, M_T_BUILTIN
+ };
+ char type[TBITS+2]; /* +1 for leading space */
+#undef TBITS
+ int tlen = 0;
+
+ if (mode->type) {
+ int i;
+
+ type[tlen++] = ' ';
+ for (i = 0; tchar[i]; i++)
+ if (mode->type & tbit[i])
+ type[tlen++] = tchar[i];
+ }
+ type[tlen] = '\0';
+
+ if (mode->HSkew) {
+ snprintf(tmp, 256, "hskew %i", mode->HSkew);
+ add(&flags, tmp);
+ }
+ if (mode->VScan) {
+ snprintf(tmp, 256, "vscan %i", mode->VScan);
+ add(&flags, tmp);
+ }
+ if (mode->Flags & V_INTERLACE) add(&flags, "interlace");
+ if (mode->Flags & V_CSYNC) add(&flags, "composite");
+ if (mode->Flags & V_DBLSCAN) add(&flags, "doublescan");
+ if (mode->Flags & V_BCAST) add(&flags, "bcast");
+ if (mode->Flags & V_PHSYNC) add(&flags, "+hsync");
+ if (mode->Flags & V_NHSYNC) add(&flags, "-hsync");
+ if (mode->Flags & V_PVSYNC) add(&flags, "+vsync");
+ if (mode->Flags & V_NVSYNC) add(&flags, "-vsync");
+ if (mode->Flags & V_PCSYNC) add(&flags, "+csync");
+ if (mode->Flags & V_NCSYNC) add(&flags, "-csync");
+#if 0
+ if (mode->Flags & V_CLKDIV2) add(&flags, "vclk/2");
+#endif
+ xf86DrvMsg(scrnIndex, X_INFO,
+ "Modeline \"%s\"x%.01f %6.2f %i %i %i %i %i %i %i %i%s"
+ " (%.01f kHz%s)\n",
+ mode->name, mode->VRefresh, mode->Clock/1000.,
+ mode->HDisplay, mode->HSyncStart, mode->HSyncEnd, mode->HTotal,
+ mode->VDisplay, mode->VSyncStart, mode->VSyncEnd, mode->VTotal,
+ flags, xf86ModeHSync(mode), type);
+ free(flags);
+}
+
+/**
+ * Marks as bad any modes with unsupported flags.
+ *
+ * \param modeList doubly-linked list of modes.
+ * \param flags flags supported by the driver.
+ *
+ * \bug only V_INTERLACE and V_DBLSCAN are supported. Is that enough?
+ */
+void
+xf86ValidateModesFlags(ScrnInfoPtr pScrn, DisplayModePtr modeList,
+ int flags)
+{
+ DisplayModePtr mode;
+
+ if (flags == (V_INTERLACE | V_DBLSCAN))
+ return;
+
+ for (mode = modeList; mode != NULL; mode = mode->next) {
+ if (mode->Flags & V_INTERLACE && !(flags & V_INTERLACE))
+ mode->status = MODE_NO_INTERLACE;
+ if (mode->Flags & V_DBLSCAN && !(flags & V_DBLSCAN))
+ mode->status = MODE_NO_DBLESCAN;
+ }
+}
+
+/**
+ * Marks as bad any modes extending beyond the given max X, Y, or pitch.
+ *
+ * \param modeList doubly-linked list of modes.
+ */
+void
+xf86ValidateModesSize(ScrnInfoPtr pScrn, DisplayModePtr modeList,
+ int maxX, int maxY, int maxPitch)
+{
+ DisplayModePtr mode;
+
+ if (maxPitch <= 0)
+ maxPitch = MAXINT;
+ if (maxX <= 0)
+ maxX = MAXINT;
+ if (maxY <= 0)
+ maxY = MAXINT;
+
+ for (mode = modeList; mode != NULL; mode = mode->next) {
+ if ((xf86ModeWidth(mode, RR_Rotate_0) > maxPitch ||
+ xf86ModeWidth(mode, RR_Rotate_0) > maxX ||
+ xf86ModeHeight(mode, RR_Rotate_0) > maxY) &&
+ (xf86ModeWidth(mode, RR_Rotate_90) > maxPitch ||
+ xf86ModeWidth(mode, RR_Rotate_90) > maxX ||
+ xf86ModeHeight(mode, RR_Rotate_90) > maxY)) {
+ if (xf86ModeWidth(mode, RR_Rotate_0) > maxPitch ||
+ xf86ModeWidth(mode, RR_Rotate_90) > maxPitch)
+ mode->status = MODE_BAD_WIDTH;
+
+ if (xf86ModeWidth(mode, RR_Rotate_0) > maxX ||
+ xf86ModeWidth(mode, RR_Rotate_90) > maxX)
+ mode->status = MODE_VIRTUAL_X;
+
+ if (xf86ModeHeight(mode, RR_Rotate_0) > maxY ||
+ xf86ModeHeight(mode, RR_Rotate_90) > maxY)
+ mode->status = MODE_VIRTUAL_Y;
+ }
+
+ if (mode->next == modeList)
+ break;
+ }
+}
+
+/**
+ * Marks as bad any modes that aren't supported by the given monitor's
+ * hsync and vrefresh ranges.
+ *
+ * \param modeList doubly-linked list of modes.
+ */
+void
+xf86ValidateModesSync(ScrnInfoPtr pScrn, DisplayModePtr modeList,
+ MonPtr mon)
+{
+ DisplayModePtr mode;
+
+ for (mode = modeList; mode != NULL; mode = mode->next) {
+ Bool bad;
+ int i;
+
+ bad = TRUE;
+ for (i = 0; i < mon->nHsync; i++) {
+ if (xf86ModeHSync(mode) >= mon->hsync[i].lo * (1-SYNC_TOLERANCE) &&
+ xf86ModeHSync(mode) <= mon->hsync[i].hi * (1+SYNC_TOLERANCE))
+ {
+ bad = FALSE;
+ }
+ }
+ if (bad)
+ mode->status = MODE_HSYNC;
+
+ bad = TRUE;
+ for (i = 0; i < mon->nVrefresh; i++) {
+ if (xf86ModeVRefresh(mode) >= mon->vrefresh[i].lo * (1-SYNC_TOLERANCE) &&
+ xf86ModeVRefresh(mode) <= mon->vrefresh[i].hi * (1+SYNC_TOLERANCE))
+ {
+ bad = FALSE;
+ }
+ }
+ if (bad)
+ mode->status = MODE_VSYNC;
+
+ if (mode->next == modeList)
+ break;
+ }
+}
+
+/**
+ * Marks as bad any modes extending beyond outside of the given clock ranges.
+ *
+ * \param modeList doubly-linked list of modes.
+ * \param min pointer to minimums of clock ranges
+ * \param max pointer to maximums of clock ranges
+ * \param n_ranges number of ranges.
+ */
+void
+xf86ValidateModesClocks(ScrnInfoPtr pScrn, DisplayModePtr modeList,
+ int *min, int *max, int n_ranges)
+{
+ DisplayModePtr mode;
+ int i;
+
+ for (mode = modeList; mode != NULL; mode = mode->next) {
+ Bool good = FALSE;
+ for (i = 0; i < n_ranges; i++) {
+ if (mode->Clock >= min[i] * (1-SYNC_TOLERANCE) &&
+ mode->Clock <= max[i] * (1+SYNC_TOLERANCE)) {
+ good = TRUE;
+ break;
+ }
+ }
+ if (!good)
+ mode->status = MODE_CLOCK_RANGE;
+ }
+}
+
+/**
+ * If the user has specified a set of mode names to use, mark as bad any modes
+ * not listed.
+ *
+ * The user mode names specified are prefixes to names of modes, so "1024x768"
+ * will match modes named "1024x768", "1024x768x75", "1024x768-good", but
+ * "1024x768x75" would only match "1024x768x75" from that list.
+ *
+ * MODE_BAD is used as the rejection flag, for lack of a better flag.
+ *
+ * \param modeList doubly-linked list of modes.
+ */
+void
+xf86ValidateModesUserConfig(ScrnInfoPtr pScrn, DisplayModePtr modeList)
+{
+ DisplayModePtr mode;
+
+ if (pScrn->display->modes[0] == NULL)
+ return;
+
+ for (mode = modeList; mode != NULL; mode = mode->next) {
+ int i;
+ Bool good = FALSE;
+
+ for (i = 0; pScrn->display->modes[i] != NULL; i++) {
+ if (strncmp(pScrn->display->modes[i], mode->name,
+ strlen(pScrn->display->modes[i])) == 0) {
+ good = TRUE;
+ break;
+ }
+ }
+ if (!good)
+ mode->status = MODE_BAD;
+ }
+}
+
+
+/**
+ * Marks as bad any modes exceeding the given bandwidth.
+ *
+ * \param modeList doubly-linked list of modes.
+ * \param bandwidth bandwidth in MHz.
+ * \param depth color depth.
+ */
+void
+xf86ValidateModesBandwidth(ScrnInfoPtr pScrn, DisplayModePtr modeList,
+ unsigned int bandwidth, int depth)
+{
+ DisplayModePtr mode;
+
+ for (mode = modeList; mode != NULL; mode = mode->next) {
+ if (xf86ModeBandwidth(mode, depth) > bandwidth)
+ mode->status = MODE_BANDWIDTH;
+ }
+}
+
+Bool
+xf86ModeIsReduced(const DisplayModeRec *mode)
+{
+ if ((((mode->HDisplay * 5 / 4) & ~0x07) > mode->HTotal) &&
+ ((mode->HTotal - mode->HDisplay) == 160) &&
+ ((mode->HSyncEnd - mode->HDisplay) == 80) &&
+ ((mode->HSyncEnd - mode->HSyncStart) == 32) &&
+ ((mode->VSyncStart - mode->VDisplay) == 3))
+ return TRUE;
+ return FALSE;
+}
+
+/**
+ * Marks as bad any reduced-blanking modes.
+ *
+ * \param modeList doubly-linked list of modes.
+ */
+void
+xf86ValidateModesReducedBlanking(ScrnInfoPtr pScrn, DisplayModePtr modeList)
+{
+ for (; modeList != NULL; modeList = modeList->next)
+ if (xf86ModeIsReduced(modeList))
+ modeList->status = MODE_NO_REDUCED;
+}
+
+/**
+ * Frees any modes from the list with a status other than MODE_OK.
+ *
+ * \param modeList pointer to a doubly-linked or circular list of modes.
+ * \param verbose determines whether the reason for mode invalidation is
+ * printed.
+ */
+void
+xf86PruneInvalidModes(ScrnInfoPtr pScrn, DisplayModePtr *modeList,
+ Bool verbose)
+{
+ DisplayModePtr mode;
+
+ for (mode = *modeList; mode != NULL;) {
+ DisplayModePtr next = mode->next, first = *modeList;
+
+ if (mode->status != MODE_OK) {
+ if (verbose) {
+ char *type = "";
+ if (mode->type & M_T_BUILTIN)
+ type = "built-in ";
+ else if (mode->type & M_T_DEFAULT)
+ type = "default ";
+ xf86DrvMsg(pScrn->scrnIndex, X_INFO,
+ "Not using %smode \"%s\" (%s)\n", type, mode->name,
+ xf86ModeStatusToString(mode->status));
+ }
+ xf86DeleteMode(modeList, mode);
+ }
+
+ if (next == first)
+ break;
+ mode = next;
+ }
+}
+
+/**
+ * Adds the new mode into the mode list, and returns the new list
+ *
+ * \param modes doubly-linked mode list.
+ */
+DisplayModePtr
+xf86ModesAdd(DisplayModePtr modes, DisplayModePtr new)
+{
+ if (modes == NULL)
+ return new;
+
+ if (new) {
+ DisplayModePtr mode = modes;
+
+ while (mode->next)
+ mode = mode->next;
+
+ mode->next = new;
+ new->prev = mode;
+ }
+
+ return modes;
+}
+
+/**
+ * Build a mode list from a list of config file modes
+ */
+static DisplayModePtr
+xf86GetConfigModes (XF86ConfModeLinePtr conf_mode)
+{
+ DisplayModePtr head = NULL, prev = NULL, mode;
+
+ for (; conf_mode; conf_mode = (XF86ConfModeLinePtr) conf_mode->list.next)
+ {
+ mode = calloc(1, sizeof(DisplayModeRec));
+ if (!mode)
+ continue;
+ mode->name = xstrdup(conf_mode->ml_identifier);
+ if (!mode->name)
+ {
+ free(mode);
+ continue;
+ }
+ mode->type = 0;
+ mode->Clock = conf_mode->ml_clock;
+ mode->HDisplay = conf_mode->ml_hdisplay;
+ mode->HSyncStart = conf_mode->ml_hsyncstart;
+ mode->HSyncEnd = conf_mode->ml_hsyncend;
+ mode->HTotal = conf_mode->ml_htotal;
+ mode->VDisplay = conf_mode->ml_vdisplay;
+ mode->VSyncStart = conf_mode->ml_vsyncstart;
+ mode->VSyncEnd = conf_mode->ml_vsyncend;
+ mode->VTotal = conf_mode->ml_vtotal;
+ mode->Flags = conf_mode->ml_flags;
+ mode->HSkew = conf_mode->ml_hskew;
+ mode->VScan = conf_mode->ml_vscan;
+
+ mode->prev = prev;
+ mode->next = NULL;
+ if (prev)
+ prev->next = mode;
+ else
+ head = mode;
+ prev = mode;
+ }
+ return head;
+}
+
+/**
+ * Build a mode list from a monitor configuration
+ */
+DisplayModePtr
+xf86GetMonitorModes (ScrnInfoPtr pScrn, XF86ConfMonitorPtr conf_monitor)
+{
+ DisplayModePtr modes = NULL;
+ XF86ConfModesLinkPtr modes_link;
+
+ if (!conf_monitor)
+ return NULL;
+
+ /*
+ * first we collect the mode lines from the UseModes directive
+ */
+ for (modes_link = conf_monitor->mon_modes_sect_lst;
+ modes_link;
+ modes_link = modes_link->list.next)
+ {
+ /* If this modes link hasn't been resolved, go look it up now */
+ if (!modes_link->ml_modes)
+ modes_link->ml_modes = xf86findModes (modes_link->ml_modes_str,
+ xf86configptr->conf_modes_lst);
+ if (modes_link->ml_modes)
+ modes = xf86ModesAdd (modes,
+ xf86GetConfigModes (modes_link->ml_modes->mon_modeline_lst));
+ }
+
+ return xf86ModesAdd (modes,
+ xf86GetConfigModes (conf_monitor->mon_modeline_lst));
+}
+
+/**
+ * Build a mode list containing all of the default modes
+ */
+DisplayModePtr
+xf86GetDefaultModes (void)
+{
+ DisplayModePtr head = NULL, mode;
+ int i;
+
+ for (i = 0; i < xf86NumDefaultModes; i++)
+ {
+ const DisplayModeRec *defMode = &xf86DefaultModes[i];
+
+ mode = xf86DuplicateMode(defMode);
+ head = xf86ModesAdd(head, mode);
+ }
+ return head;
+}
+
+/*
+ * Walk a mode list and prune out duplicates. Will preserve the preferred
+ * mode of an otherwise-duplicate pair.
+ *
+ * Probably best to call this on lists that are all of a single class
+ * (driver, default, user, etc.), otherwise, which mode gets deleted is
+ * not especially well defined.
+ *
+ * Returns the new list.
+ */
+
+DisplayModePtr
+xf86PruneDuplicateModes(DisplayModePtr modes)
+{
+ DisplayModePtr m, n, o;
+
+top:
+ for (m = modes; m; m = m->next) {
+ for (n = m->next; n; n = o) {
+ o = n->next;
+ if (xf86ModesEqual(m, n)) {
+ if (n->type & M_T_PREFERRED) {
+ xf86DeleteMode(&modes, m);
+ goto top;
+ }
+ else
+ xf86DeleteMode(&modes, n);
+ }
+ }
+ }
+
+ return modes;
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-24 10:34:27 +0000